feat(mobile): prompt when deleting from trash

mobile/lib/presentation/widgets/action_buttons/delete_trash_action_button.widget.dart

@@ -5,6 +5,7 @@ import 'package:immich_mobile/constants/enums.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/providers/infrastructure/action.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
+import 'package:immich_mobile/widgets/asset_grid/trash_delete_dialog.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 
 /// This delete action has the following behavior:
@@ -22,6 +23,18 @@ class DeleteTrashActionButton extends ConsumerWidget {
       return;
     }
 
+    final selectCount = ref.watch(multiSelectProvider.select((s) => s.selectedAssets.length));
+
+    final confirmDelete =
+        await showDialog<bool>(
+          context: context,
+          builder: (context) => TrashDeleteDialog(count: selectCount),
+        ) ??
+        false;
+    if (!confirmDelete) {
+      return;
+    }
+
     final result = await ref.read(actionProvider.notifier).deleteRemoteAndLocal(source);
     ref.read(multiSelectProvider.notifier).reset();
 

mobile/lib/widgets/asset_grid/trash_delete_dialog.dart

@@ -0,0 +1,47 @@
+import 'package:flutter/material.dart';
+import 'package:immich_mobile/extensions/build_context_extensions.dart';
+import 'package:immich_mobile/generated/translations.g.dart';
+import 'package:immich_ui/immich_ui.dart';
+
+class TrashDeleteDialog extends StatelessWidget {
+  const TrashDeleteDialog({super.key, required this.count});
+
+  final int count;
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      shape: const RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(10))),
+      title: Text(context.t.permanently_delete),
+      content: ImmichHtmlText(context.t.permanently_delete_assets_prompt(count: count)),
+      actions: [
+        SizedBox(
+          width: double.infinity,
+          height: 48,
+          child: FilledButton(
+            onPressed: () => context.pop(false),
+            style: FilledButton.styleFrom(
+              backgroundColor: context.colorScheme.surfaceDim,
+              foregroundColor: context.primaryColor,
+            ),
+            child: Text(context.t.cancel, style: const TextStyle(fontWeight: FontWeight.bold)),
+          ),
+        ),
+        const SizedBox(height: 8),
+        SizedBox(
+          width: double.infinity,
+          height: 48,
+
+          child: FilledButton(
+            onPressed: () => context.pop(true),
+            style: FilledButton.styleFrom(
+              backgroundColor: context.colorScheme.errorContainer,
+              foregroundColor: context.colorScheme.onErrorContainer,
+            ),
+            child: Text(context.t.delete, style: const TextStyle(fontWeight: FontWeight.bold)),
+          ),
+        ),
+      ],
+    );
+  }
+}